Bath-tub trap.



PATBNTED 001'. 6, 1903.

I. H. FITZGERALD; BATH TUB' TRAP APPLIQILTIQN FILED AUG. 7, 1902- I 1T0 MODEL.

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UNITED STATES Patented October 1903."

JOHN H. FITZGERALD, OF BOSTON, MASSACHUSETTS.

BATH-TUB TRAP. f

SPECIFICATION forming part of Letters Patent No. 740,639, dated October 6, 1903.

Application filed August 7, 1902.

To all whom it may concern:

Be it known that I, JOHN H. FITZGERALD, of Boston, county of Sulfolk, State of Massachusetts, have invented an Improvement in Bath-Tub Traps, of which the following description, in connection with the accompanying drawings, is a specification, like characterson the drawings representing like parts.

This invention relates to a form of trap which is especially designed to be used in connection with a bath-tub and to be located between the floor of the bath-room and the ceiliug oi the room below, and has for its object the provision of means for enabling the ready removal of obstructions in the trap and also the removal of the water therein to prevent freezing.

In some cities the plumbing regulations require that no traps shallbe installed in which a metal wall shall be solely relied upon to prevent the passage of sewer-gas to the house, on account of the liability of the formation of blow-holes in the wall when it is castthat is, the trap must be so formed 'that in case there is a defective opening in any part of the trap which would permit the passage of sewer-gas into the house the defect will be immediately made known by the leakage of water {rom the trap.

I accomplish the object above referred to and produce a trap which complies with all plumbing regulations by providing an S-trap of ordinary form with an extension which leads into the leg of the trap next the house side and extends upwardly to the floor-line of the bath-room, thereby forming a chamber access to which may be had from the bath-room and connection between which and the trap b and a discharge-pipe c.

is normally closed by a screw-plug at the lower end of said chamber.

For a more definite understanding of my invention reference is made to the accompanying drawings, in which Figure 1 is a side elevation of a trap embodying my improvements, and Fig. 2 isacentral cross-section thereof.

An S-trap a of ordinary form isprovided, said trap being either made of lead or cast'in brass and being provided with an inlet-pipe A pipe d connects the inlet b with the bath-tub, and the usual 'charg eside of the trap.

abling easy access to thetrap.

8eria1llo.118,697. (No model.)

ventilating-pipe e is provided at the dis- The leg of the trap on the house side is continued upwardly above the point Where the inlet 1) leads into the trap and is enlarged, so as to form a bowl f, the latter being'screwthreaded at its upper end to receive a tube g, which extends to the level of the floor of the bath-room, as indicated, said bowl and tube formingachamber which is closed on all sides. The upper end of the .pipe 9 is closed by a cap it of any suitable form.

A screw-plug t' is threaded into the upwardly-extending portion of the house-side leg of the trap at the lower end of the enlarged portion or bowl f and just above the point where the inlet 17 is connected to the trap.

- .In this trap the scouring or cleaning action by. the flow of water is as perfect as in an ordinary S-trap. The plug 2' being located as closely to the inlet 5 as possible prevents the water from'backing up into the bowl or chamberf, so that its walls would become foul.

In case, it is desired to clean the trap or to remove any obstruction or the water therein the cover It and plug 71 are removed, en- The chamber formed by the bowl fand pipe 9 prevents any possibility of the water in the trap or connected pipes from being spilled when it is removed, so that the ceiling below would be injured, and-byhaving said chamber enlarged access may be had to the trap more easily than if it were no larger than the interior of the trap.

As the screw-plug i is above the water seal or level of the water in the trap, there is no danger of the water leaking into the bowl and past the plug. If, however, the chamber above'the trap were connected thereto at such a point that itwould be necessary to have the plugi below the normal waterlevel in the trap and any such leakage should occur, the water would become stagnant in the chamber above the plug i and become so fool in time that the escaping odors therefrom into the bathroom would be highly objectionable.

It will be obvious that a metal wall is not wholly relied on at any point to prevent the passage of sewer-gas into the house and that any defect in any part of the trap which would permit the escape of sewer-gas would be immediately made known by the leaking of Water from the trap. This construction, moreover, enables me to use a lead trap instead of a cast-metal one, so that the trap may be bent to a certain extent to enable the connections to be made when the plumbing is installed.

Having thus described my invention, what Iclaim as new,and desire to secure by Letters Patent, is

An S-trap having an inlet leading into one side of its houseside leg, the walls of said leg extending above said inlet and diverging to provide an enlarged chamber, and a plug 

